D. K. Instruments pvt. Ltd. An iso 9001:2000 certified company manufactures a wide range of level, flow and pressure instruments. D. K. Instruments pvt. Ltd. Offers variable orifice / swing vane principle. Salient features are as follows:
1. all metal construction - no tubes of glass or plastic to break.
2. spring loaded mechanical design - requires no straight pipe run and not affected by orientation.
3. limited movement on internal parts - minimal wear and down time.
4. modular design - reduces maintenance costs, down time, and production loss.
5. direct indication & field adjustable switch[es] - monitors critical flows and provides alarm[s].
6. 1% of rate repeatable switch set point - accurate & reliable through all operation cycles.
7. weatherproof enclosure box to ip65 [nema 4].
8. flow through design - minimal pressure loss.
9. individually calibrated to customer specification - ensures accuracy.
10. adjustable under operating conditions.
11. scale is in units [e.G litres/minute].
12. large range of body materials available.
13. size range from 8mm [1/4"] to 200mm [8"].
14. may be installed in any position.
15. orientation of enclosure box easily changed.
16. high switch rating - 10 to 15 amps.
17. atex approved explosion-proof models available.
18. will pass twice the maximum indicated flow.
19. acts as non-return value.
Applications of variable orifice / swing vane principle are:
A. water [clean or dirty] petroleum based oils
Solvents
B. de-mineralized water synthetic based oils paints
C. de-ionized water coolants corrosive fluids air & gases
